scripts/get_abi.pl: ignore some temp files

When there are filenames of the form ".orig" or ".rej" in
the Documenatation/ABI/ subdirectories, there can be confusing or
erroneous output generated. Example: the file
Documenation/ABI/testing/sysfs-bus-papr-pmem.orig causes this
warning message:

Documentation/ABI/testing/sysfs-bus-papr-pmem:2: WARNING: unknown document: '/powerpc/papr_hcalls'

Prevent this by skipping over filenames that may be created by
patch/diff tools etc.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231228233113.5218-1-rdunlap@infradead.org

scripts/get_abi.pl

@@ -93,6 +93,7 @@ sub parse_abi {
 	return if ($mode & S_IFDIR);
 	return if ($file =~ m,/README,);
 	return if ($file =~ m,/\.,);
+	return if ($file =~ m,\.(rej|org|orig|bak)$,);
 
 	my $name = $file;
 	$name =~ s,.*/,,;